Product Details

CycleOps Hammer Direct Drive Trainer

The Hammer Direct Drive Trainer redefines indoor training to create the ultimate riding experience. One that's versatile enough to handle the most intense interval sessions as it is the easiest of recovery rides. Simply put, the Hammer is the perfect addition to any athlete's toolbox.

This direct drive style bike trainer eliminates the tire-to-roller contact, and is capable of replicating any outdoor ride from conversational group rides to rolling hills to pain face inducing 20% grades. All of this is done with a smooth, road-like-feel thanks to a massive 20 lb. precision-balanced flywheel that replicates real world inertia better than anyone else. Paired with our innovative, rapid response electromagnetic resistance system and you've got a bike trainer that can cover large resistance changes in a blink of an eye at a whisper quiet 64 decibels. Plus, the Hammer's revolutionary axle compatibility gives you the freedom to choose any thru-axle or quick release bike now and for years to come. Simply add a cassette, pop off your rear wheel, connect to your favorite virtual training software and prepare to Hammer away.

This is a nice trainer. It is relatively quiet. At this price it ought to include free Rouvy, not just the free ride for one hour at a time. Also, it is not recommended to calibrate it on Zwift as that might totally foul up everything. Calibrate it on Rouvy.
A smart trainer used online is much easier to use than a dumb trainer; you do not have to pay attention to keep your power at a desired level. Also it really is a lot more fun. I have always loved my trainer but this is so much easier to ride for an hour or more.

After less than a year of use, my Hammer is lunching itself. A grinding noise is emanating from the bowels of my trainer. Cycleops is aware and it's customer service has been lacking. I've been working on getting this problem resolved for more than a month. If you buy this trainer, know that you may have to either you might have to pay to ship it back to them ($60) to fix their DEFECT or they will send you out the part and you will have to dig into the guts of your trainer and fix it yourself. Don't make the same mistake I did and consider the alternatives.

I bought this for winter indoor training. This is my first trainer. The idea of training indoors on my bike seems boring and I have avoided this for years. I am three workouts in and set my trainer up to use Rouvy. The workout is more intense than outdoor riding. I found that climbing is slightly more difficult than real life. A 6% grade on the trainer is a bit more difficult that on the road (I would estimate 10% harder). Flats seem to have a similar feel and my speed is about what I would expect with no wind factored in. Where the workout is more intense is descending. I live in the Colorado Rockies, so climb and descend on every ride. My heart rate will often drop to around 100 on an actual descent and the only reason to pedal is to keep loose. On the trainer, it maintains some tension on the descent and so my heart rate stays elevated. My average heart rate on a longer ride might be 130 outdoors. Using similar climbs and descents on the Hammer, I have been averaging about 144.